Fornell Salvador, Ribera Juan, Mella Mario, Carranza Andrés, Serrano-Toledano David, Domecq Gabriel
1 Orthopaedics Department, Virgen del Rocío Hospital, Seville, Spain.
2 Hip Unit, Hospital Viamed Santa Ángela de la cruz, Seville, Spain.
Hip Int. 2018 Jul;28(4):434-441. doi: 10.5301/hipint.5000581. Epub 2017 Oct 16.
The aim of this study was to examine whether the use of an internal electrostimulator could improve the results obtained with core decompression alone in the treatment of osteonecrosis of the femoral head.
We performed a retrospective study of 41 patients (55 hips) treated for osteonecrosis of the femoral head between 2005 and 2014. Mean follow-up time was 56 (12-108) months. We recorded 3 parameters: time to recurrence of pain, time to conversion to arthroplasty and time to radiographic failure. Survival was estimated using the Kaplan-Meier method. The equality of the survival distributions was determined by the Log rank test.
Implanted electrostimulator was a factor that increased the survival of hips in a pre-op Steinberg stage of II or below, while it remained unchanged if the stage was III or higher.
The addition of an internal electrostimulator provides increased survival compared to core decompression alone at stages below III.
本研究的目的是探讨使用内置电刺激器能否改善单纯髓芯减压治疗股骨头坏死的效果。
我们对2005年至2014年间接受股骨头坏死治疗的41例患者（55髋）进行了回顾性研究。平均随访时间为56（12 - 108）个月。我们记录了3个参数：疼痛复发时间、转为关节置换的时间和影像学失败时间。采用Kaplan-Meier方法估计生存率。通过对数秩检验确定生存分布的相等性。
植入电刺激器是提高术前Steinberg II期或以下髋关节生存率的一个因素，而如果是III期或更高阶段，生存率则保持不变。
与单纯髓芯减压相比，在III期以下阶段添加内置电刺激器可提高生存率。
